The White Moonlight Never Plays by the Rules

After being hit by a sudden "Unusual White Moonlight" System, the Host's white moonlight begins a wild campaign of mischief. As his country teeters on the brink of collapse, a general fights desperately against the enemy, thinking that if he could see that person one last time before he died, his life would have been worthwhile. Then he looks back and sees his white moonlight, who should be lying weak and dying in the imperial palace, driving a mecha obtained through the System's shop and crushing an enemy commander underfoot. All while humming a song. Is there anything wrong with using a mecha in ancient times? No! When an obsessive CEO hears that his white moonlight has returned to the country, he agonizes for three days, then snaps and stabs his substitute wife. He rushes to his white moonlight and excitedly declares that the obstacle keeping them apart is gone. His white moonlight smiles warmly at him. Then, as soon as he turns around, she hits him with a brick. "Hello, I'd like to report a crime." How about taking a look at the complete criminal code? How many laws did you break? The aloof, self-possessed leader of the Immortal Alliance reluctantly accepts the wife assigned to him for the greater good. He tells his white moonlight, "Wait for me for a few hundred years, and I promise..." White Moonlight: "The Demon Lord just said he loves me. I'm going to see what's going on over there. I probably won't be back for about a thousand years." Leader: "???" If you're all immortal, why are you still worried about having heirs? What's wrong with you people? There are too many scumbag men in countless worlds. They're brutal, cold-blooded, obsessive, and prone to sudden stupidity... Only their white moonlight is an unshakable sanctuary in their hearts. Scumbag men: "He's the only one we truly love. No one can change his place in our hearts. He's kind, beautiful, upright, and innocent: the very embodiment of everything good in the world!" The white moonlight of all those powerful men appears out of nowhere, hands in his pockets, and beats someone with a folding stool held in one hand. Hearing that, he wipes the blood from his face and spares a glance back at them. "Are you talking about me?" Scumbag men: "..." Theme: There is light at the end